using System;
using System.Collections;
using AppUI.Manager.View;
using SmartBowSDK;
using UnityEngine;
using WildAttack;

namespace AppUI.Bluetooth
{
    /// <summary>
    /// BluetoothHolder 统一入口：蓝牙、设备档案及后续红外等 SDK 能力。
    /// AppUI 层请通过 <see cref="ins"/> 访问，不要直接引用 BluetoothAim / AimHandler 单例。
    /// </summary>
    [DefaultExecutionOrder(-100)]
    public class SmartBowDeviceHub : MonoBehaviour
    {
        public static SmartBowDeviceHub ins;

        public SmartBowDeviceState State { get; private set; }

        public event Action<SmartBowDeviceState> OnStateChanged;

        BluetoothAim _ble;
        AimHandler _aim;
        SmartBowHelper _subscribed1P;
        SmartBowHelper _subscribed2P;
        Coroutine _postInitBatteryRefresh;
        bool _isScreenPositioned;

        [Tooltip("九轴校准数据走游戏 WebSocket/业务服（SDK Host 模式）；关闭则使用 SDK 默认 Remote HTTP。")]
        [SerializeField] bool useHostCalibrateStorage = true;

        [Header("设备展示（DeviceView 等设备图/标题）")]
        [SerializeField] DeviceTypeDisplayEntry[] deviceDisplayEntries;

        public bool IsReady => _ble != null && _aim != null;

        /// <summary>设备档案（1P/2P 本地配置）。</summary>
        public AimHandler Aim => _aim;

        /// <summary>蓝牙连接模块；AppUI 业务请用 Hub 公开 API，勿在 View 层直接访问。</summary>
        public BluetoothAim Ble => _ble;

        public bool NeedDecryption
        {
            get => _ble != null && _ble.NeedDecryption;
            set { if (_ble != null) _ble.NeedDecryption = value; }
        }

        /// <summary>确保 BluetoothHolder 已实例化（DontDestroyOnLoad）。</summary>
        public static void EnsureReady()
        {
            if (ins != null) return;
            GameObject prefab = ViewManager.GetPrefabByType(UIPrefabType.SmartBowDeviceHub);
            if (prefab != null)
                Instantiate(prefab);
        }

        void Awake()
        {
            if (ins != null && ins != this)
            {
                Destroy(gameObject);
                return;
            }
            ins = this;
            DontDestroyOnLoad(gameObject);
            _ble = GetComponentInChildren<BluetoothAim>(true);
            _aim = GetComponentInChildren<AimHandler>(true);
            if (_ble == null || _aim == null)
                Debug.LogError("[SmartBowDeviceHub] 预制体缺少子节点 BluetoothAim 或 AimHandler。");
        }

        void Start()
        {
            if (_aim != null)
                _aim.aimDeviceInfoChangeEvent += OnDeviceInfoChanged;
            RegisterExistingHelpers();
            RefreshState();
        }

        void OnDestroy()
        {
            UnsubscribeHelper(ref _subscribed1P);
            UnsubscribeHelper(ref _subscribed2P);
            if (_aim != null)
                _aim.aimDeviceInfoChangeEvent -= OnDeviceInfoChanged;
            if (ins == this) ins = null;
        }

        void OnDeviceInfoChanged() => RefreshState();

        public void RegisterHelper1P(SmartBowHelper helper)
        {
            if (helper == null) return;
            if (_subscribed1P == helper) return;
            UnsubscribeHelper(ref _subscribed1P);
            _subscribed1P = helper;
            _subscribed1P.OnBluetoothStatusChanged += OnHelperStatusChanged;
            _subscribed1P.OnBluetoothModuleInited += OnHelperModuleInited;
            ConfigureHelperCalibrateStorage(_subscribed1P);
            SyncArrowWeights(BluetoothPlayer.FIRST_PLAYER);
            RefreshState();
        }

        public void RegisterHelper2P(SmartBowHelper helper)
        {
            if (helper == null) return;
            if (_subscribed2P == helper) return;
            UnsubscribeHelper(ref _subscribed2P);
            _subscribed2P = helper;
            _subscribed2P.OnBluetoothStatusChanged += OnHelperStatusChanged;
            _subscribed2P.OnBluetoothModuleInited += OnHelperModuleInited;
            ConfigureHelperCalibrateStorage(_subscribed2P);
            SyncArrowWeights(BluetoothPlayer.SECOND_PLAYER);
            RefreshState();
        }

        void RegisterExistingHelpers()
        {
            if (_ble == null) return;
            RegisterHelper1P(_ble.getSmartBowHelper1P());
            RegisterHelper2P(_ble.getSmartBowHelper2P());
        }

        void OnHelperStatusChanged(SmartBowSDK.BluetoothStatusEnum oldStatus, SmartBowSDK.BluetoothStatusEnum newStatus) => RefreshState();

        /// <summary>模块初始化完成（含首次电量请求）后刷新 Hub 快照，供 SideSlip / DeviceView 等订阅方更新电量。</summary>
        void OnHelperModuleInited()
        {
            RefreshState();
            if (_postInitBatteryRefresh != null)
                StopCoroutine(_postInitBatteryRefresh);
            _postInitBatteryRefresh = StartCoroutine(RefreshStateAfterBatteryDelay());
        }

        IEnumerator RefreshStateAfterBatteryDelay()
        {
            // InitWhenConnected 发完 "b" 后电量包可能略晚于 OnBluetoothModuleInited 回调
            yield return new WaitForSecondsRealtime(0.5f);
            RefreshState();
            yield return new WaitForSecondsRealtime(1f);
            RefreshState();
            _postInitBatteryRefresh = null;
        }

        public void NotifyStateChanged() => RefreshState();

        public void RefreshState()
        {
            SmartBowDeviceState next = BuildState();
            if (State.Equals(next)) return;
            State = next;
            try { OnStateChanged?.Invoke(State); }
            catch (Exception e) { Debug.LogError(e); }
        }

        SmartBowDeviceState BuildState()
        {
            SmartBowHelper helper1P = _ble != null ? _ble.getSmartBowHelper1P() : null;
            SmartBowHelper helper2P = _ble != null ? _ble.getSmartBowHelper2P() : null;

            return new SmartBowDeviceState
            {
                IsHubReady = IsReady,
                ActivePlayer = _ble != null ? _ble.getBLEPlayer() : BluetoothPlayer.FIRST_PLAYER,
                Status1P = helper1P != null ? helper1P.GetBluetoothStatus() : SmartBowSDK.BluetoothStatusEnum.None,
                Status2P = helper2P != null ? helper2P.GetBluetoothStatus() : SmartBowSDK.BluetoothStatusEnum.None,
                Battery1P = helper1P != null ? helper1P.GetBattery() : 0,
                Battery2P = helper2P != null ? helper2P.GetBattery() : _ble?.get2PBattery() ?? 0,
                IsScreenPositioned = _isScreenPositioned,
            };
        }

        public void SetScreenPositioned(bool positioned)
        {
            if (_isScreenPositioned == positioned) return;
            _isScreenPositioned = positioned;
            RefreshState();
        }

        public BluetoothPlayer GetActivePlayer() => _ble != null ? _ble.getBLEPlayer() : BluetoothPlayer.FIRST_PLAYER;

        public void SetActivePlayer(BluetoothPlayer player)
        {
            _ble?.setBLEPlayer(player);
            RefreshState();
        }

        public SmartBowSDK.BluetoothStatusEnum GetSdkStatus(BluetoothPlayer player)
        {
            return State.GetSdkStatus(player);
        }

        public bool IsConnected(BluetoothPlayer player) => State.IsPlayerConnected(player);

        public bool IsConnecting(BluetoothPlayer player) => State.IsPlayerConnecting(player);

        public int GetBattery(BluetoothPlayer player)
        {
            return player == BluetoothPlayer.SECOND_PLAYER ? State.Battery2P : State.Battery1P;
        }

        public string GetStatusTextKey(BluetoothPlayer player)
        {
            return State.GetBLE2StatusTextKey(GetSdkStatus(player));
        }

        public void Connect1P() => _ble?.DoConnect();

        public void Connect2P() => _ble?.DoConnect2P();

        public void ConnectActivePlayer()
        {
            if (_ble == null) return;
            if (GetActivePlayer() == BluetoothPlayer.SECOND_PLAYER)
                Connect2P();
            else
                Connect1P();
        }

        public void CancelConnecting(global::BluetoothStatusEnum status = global::BluetoothStatusEnum.ConnectFail)
        {
            _ble?.onCancelAllConnecting(status);
            RefreshState();
        }

        /// <summary>DeviceView 手动选型/连接时抑制 HomeView 延迟自动连接，避免与 SideSlip 冲突。</summary>
        public void SetSuppressHomeAutoConnect(bool suppress) => _ble?.SetSuppressHomeAutoConnect(suppress);

        /// <summary>兼容旧版 onCancelAllConnecting 无参调用。</summary>
        public void CancelConnecting() => CancelConnecting(global::BluetoothStatusEnum.ConnectFail);

        public void SetConnectCanceled(bool canceled)
        {
            if (_ble != null) _ble.connectCanceled = canceled;
        }

        public void Set2PNoNeedToReconnect(bool value)
        {
            if (_ble != null) _ble.bNoNeedToReconnect = value;
        }

        public SmartBowHelper GetHelper(BluetoothPlayer player)
        {
            if (_ble == null) return null;
            return player == BluetoothPlayer.SECOND_PLAYER ? _ble.getSmartBowHelper2P() : _ble.getSmartBowHelper1P();
        }

        public void SubscribeShooting(BluetoothPlayer player, SmartBowHelper.ShootingEvent handler)
        {
            SmartBowHelper helper = GetHelper(player);
            if (helper == null || handler == null) return;
            helper.OnShooting += handler;
        }

        public void UnsubscribeShooting(BluetoothPlayer player, SmartBowHelper.ShootingEvent handler)
        {
            SmartBowHelper helper = GetHelper(player);
            if (helper == null || handler == null) return;
            helper.OnShooting -= handler;
        }

        public void SubscribeBleDeviceState(BluetoothAim.BleDeviceEvent handler)
        {
            if (_ble == null || handler == null) return;
            _ble.OnBleDeviceState += handler;
        }

        public BluetoothDeviceStatus GetBleDeviceState() {
            if (_aim == null) return BluetoothDeviceStatus.None;
            return _aim.bluetoothDeviceStatus;
        }

        public BluetoothDeviceStatus SetBleDeviceState(BluetoothDeviceStatus deviceStatus)
        {
            if (_aim == null) return BluetoothDeviceStatus.None;
            _aim.bluetoothDeviceStatus = deviceStatus;
            return _aim.bluetoothDeviceStatus;
        }
        public void UnsubscribeBleDeviceState(BluetoothAim.BleDeviceEvent handler)
        {
            if (_ble == null || handler == null) return;
            _ble.OnBleDeviceState -= handler;
        }

        public void SubscribeDeviceAndSystemInfoEvent(BluetoothAim.DeviceAndSystemInfoEvent handler)
        {
            if (_ble == null || handler == null) return;
            _ble.OnDeviceAndSystemInfoEvent += handler;
        }

        public void UnsubscribeDeviceAndSystemInfoEvent(BluetoothAim.DeviceAndSystemInfoEvent handler)
        {
            if (_ble == null || handler == null) return;
            _ble.OnDeviceAndSystemInfoEvent -= handler;
        }

        /// <summary>触发一次当前缓存的设备类型 / 连接平台信息。</summary>
        public void NotifyDeviceAndSystemInfo() => _ble?.GetDeviceAndSystemInfoEvent();

        /// <summary>
        /// 将 <see cref="UserSettings.ins.actualArrowWeight"/> 与 <see cref="CommonConfig.arrowWeight"/>
        /// 同步到 SDK 红外射箭速度换算（1P + 2P）。
        /// </summary>
        public void SyncArrowWeights()
        {
            SyncArrowWeights(BluetoothPlayer.FIRST_PLAYER);
            SyncArrowWeights(BluetoothPlayer.SECOND_PLAYER);
        }

        /// <summary>
        /// 将当前用户箭重设置同步到指定玩家的 SDK Helper。
        /// </summary>
        public void SyncArrowWeights(BluetoothPlayer player)
        {
            SmartBowHelper helper = GetHelper(player);
            if (helper == null) return;

            float gameWeight = UserSettings.ins != null ? UserSettings.ins.actualArrowWeight : 20f;
            float solidWeight = CommonConfig.arrowWeight > 0f ? CommonConfig.arrowWeight : 75f;
            helper.SetGameArrowWeight(gameWeight);
            helper.SetSolidArrowWeight(solidWeight);
        }
        /**
         * // 分开设置
            hub.SetGameArrowWeight(BluetoothPlayer.FIRST_PLAYER, 27f);
            hub.SetSolidArrowWeight(BluetoothPlayer.FIRST_PLAYER, 75f);

            // 读取
            float game = hub.GetGameArrowWeight(BluetoothPlayer.FIRST_PLAYER);
            float solid = hub.GetSolidArrowWeight(BluetoothPlayer.FIRST_PLAYER);
         */
        /// <summary>设置指定玩家 SDK 游戏里箭重（克）。</summary>
        public void SetGameArrowWeight(BluetoothPlayer player, float gameArrowWeight)
        {
            GetHelper(player)?.SetGameArrowWeight(gameArrowWeight);
        }

        /// <summary>设置指定玩家 SDK 实体模具箭重（克）。</summary>
        public void SetSolidArrowWeight(BluetoothPlayer player, float solidArrowWeight)
        {
            GetHelper(player)?.SetSolidArrowWeight(solidArrowWeight);
        }

        /// <summary>读取指定玩家 SDK 游戏里箭重；Helper 未就绪时回退 UserSettings。</summary>
        public float GetGameArrowWeight(BluetoothPlayer player)
        {
            SmartBowHelper helper = GetHelper(player);
            if (helper != null) return helper.GetGameArrowWeight();
            return UserSettings.ins != null ? UserSettings.ins.actualArrowWeight : 20f;
        }

        /// <summary>读取指定玩家 SDK 实体模具箭重；Helper 未就绪时回退 CommonConfig。</summary>
        public float GetSolidArrowWeight(BluetoothPlayer player)
        {
            SmartBowHelper helper = GetHelper(player);
            if (helper != null) return helper.GetSolidArrowWeight();
            return CommonConfig.arrowWeight > 0f ? CommonConfig.arrowWeight : 75f;
        }

        public float GetArrowSpeed(BluetoothPlayer player)
        {
            SmartBowHelper helper = GetHelper(player);
            if (helper == null) return 0f;
            return helper.GetArrowSpeed();
        }

        /// <summary>模块是否初始化完成（Demo：此后再调传感器/校准 API）。</summary>
        public bool IsModuleInited(BluetoothPlayer player)
        {
            SmartBowHelper helper = GetHelper(player);
            return helper != null && helper.IsBluetoothModuleInited();
        }

        /// <summary>
        /// 对齐 DemoStarter.OnBluetoothModuleInited：开启九轴 + 射箭传感。
        /// 连接态 Connected 但 moduleInited 未完成时返回 false。
        /// </summary>
        public bool EnsureNineAxisSensorsStarted(BluetoothPlayer? player = null)
        {
            if (_ble == null) return false;
            BluetoothPlayer p = player ?? GetActivePlayer();
            SmartBowHelper helper = GetHelper(p);
            if (helper == null) return false;
            if (helper.GetBluetoothStatus() != SmartBowSDK.BluetoothStatusEnum.Connected)
                return false;
            if (!helper.IsBluetoothModuleInited())
                return false;

            SyncArrowWeights(p);
            helper.StartRotationSensor();
            helper.StartShootingSensor();
            return true;
        }

        public bool IsMainConnectToInfraredDevice() =>
            IsMainConnectToHOUYIPRO() || IsMainConnectToARTEMISPRO();

        /// <summary>1P 档案为 HOUYIPRO 且已连接（<see cref="CommonConfig.bDisableBluetooth"/> 时仅看设备类型）。</summary>
        public bool IsMainConnectToHOUYIPRO() => IsMainConnectToDeviceType(AimDeviceType.HOUYIPRO);

        /// <summary>1P 档案为 ARTEMISPRO 且已连接（<see cref="CommonConfig.bDisableBluetooth"/> 时仅看设备类型）。</summary>
        public bool IsMainConnectToARTEMISPRO() => IsMainConnectToDeviceType(AimDeviceType.ARTEMISPRO);

        /// <summary>1P 档案为枪类设备且已连接（<see cref="CommonConfig.bDisableBluetooth"/> 时仅看设备类型）。</summary>
        public bool IsMainConnectToGun()
        {
            return GetMainConnectGunType().isGun;
        }

        /// <summary>1P 枪类连接信息：是否满足枪模式 + 具体枪型。</summary>
        public (bool isGun, AimDeviceType gunType) GetMainConnectGunType()
        {
            AimDeviceType gunType = AimDeviceType.NONE;
            if (_aim == null)
                return (false, gunType);

            int type = _aim.GetDeviceType(BluetoothPlayer.FIRST_PLAYER);
            if (!IsGunDeviceType(type))
                return (false, gunType);

            gunType = (AimDeviceType)type;
            if (CommonConfig.bDisableBluetooth)
                return (true, gunType);

            return (IsConnected(BluetoothPlayer.FIRST_PLAYER), gunType);
        }

        static bool IsGunDeviceType(int type) =>
            type == (int)AimDeviceType.Gun
            || type == (int)AimDeviceType.PistolM17
            || type == (int)AimDeviceType.RifleM416;

        bool IsMainConnectToDeviceType(AimDeviceType deviceType)
        {
            if (_aim == null)
                return false;
            if (_aim.GetDeviceType(BluetoothPlayer.FIRST_PLAYER) != (int)deviceType)
                return false;
            if (CommonConfig.bDisableBluetooth)
                return true;
            return IsConnected(BluetoothPlayer.FIRST_PLAYER);
        }

        void UnsubscribeHelper(ref SmartBowHelper helper)
        {
            if (helper == null) return;
            SdkCalibrateHostBridge.Unbind(helper);
            helper.OnBluetoothStatusChanged -= OnHelperStatusChanged;
            helper.OnBluetoothModuleInited -= OnHelperModuleInited;
            helper = null;
        }

        void ConfigureHelperCalibrateStorage(SmartBowHelper helper)
        {
            if (helper == null) return;
            if (useHostCalibrateStorage)
                SdkCalibrateHostBridge.Bind(helper);
            else
            {
                SdkCalibrateHostBridge.Unbind(helper);
                helper.calibrateDataStorageMode = CalibrateDataStorageMode.Remote;
            }
        }

        /// <summary>按 <see cref="AimDeviceType"/> 取 DeviceView 等设备展示图。</summary>
        public Sprite GetDeviceDisplaySprite(AimDeviceType deviceType) =>
            TryGetDeviceDisplay(deviceType, out Sprite sprite, out _) ? sprite : null;

        /// <summary>按 <see cref="AimDeviceType"/> 取 DeviceView 等设备展示标题。</summary>
        public string GetDeviceDisplayName(AimDeviceType deviceType) =>
            TryGetDeviceDisplay(deviceType, out _, out string displayName) ? displayName : deviceType.ToString();

        public bool TryGetDeviceDisplay(AimDeviceType deviceType, out Sprite sprite, out string displayName)
        {
            sprite = null;
            displayName = null;
            if (deviceDisplayEntries == null) return false;

            for (int i = 0; i < deviceDisplayEntries.Length; i++)
            {
                DeviceTypeDisplayEntry entry = deviceDisplayEntries[i];
                if (entry == null || entry.deviceType != deviceType) continue;
                sprite = entry.sprite;
                displayName = string.IsNullOrEmpty(entry.displayName)
                    ? deviceType.ToString()
                    : entry.displayName;
                return sprite != null || !string.IsNullOrEmpty(displayName);
            }

            return false;
        }

        public void ResetAim(BluetoothPlayer player) => GetHelper(player)?.ResetAim();

        public void SetMainConnectDeviceType() => _ble.SetMainConnectDeviceType();
    }
}